Butanediol low-temperature water removal device and use method thereof
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A butanediol and low-temperature technology, which is applied in the field of butanediol low-temperature water removal equipment, can solve the problems of difficult distillation control in large tanks, and achieve the goals of avoiding damage to the vacuum environment, improving sealing, and improving mixed flow efficiency and effect Effect
Active Publication Date: 2019-07-05
ANQING HE XING CHEM
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Problems solved by technology
[0006] Aiming at the difficulty in controlling the distillation of large-scale tanks in the prior art, the present invention provides a butanediol low-temperature water removal equipment and its use method, which uses a heating tube to control the temperature
Method used
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[0048] Example 1
[0049] Such as Figure 1 to Figure 8 As shown, a low-temperature water removal equipment for butanediol includes a distillation kettle 1 and a cover 2 for sealing the distillation kettle 1. A heating pipe 3 for heating butanediol is passed through the distillation kettle 1. The side wall of the still 1 is a double-layer structure composed of an inner wall and an outer wall. The double-layer structure is divided into a lower space 101 and an upper space 102 that are independent of each other. The lower space 101 and the upper space 102 are both vacuumed to accommodate The purpose of heat preservation of the cavity; the outer wall of the upper space 102 is provided with a vacuum pump insertion port 103, and the inner wall of the upper space 102 is provided with a first one-way valve 104 that leads to the accommodating cavity of the distillation kettle 1, and an external vacuum pump connects the upper space The air in 102 is drawn out, and the air pressure in the...
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[0063] Example 2
[0064] On the basis that the above-mentioned other technical solutions remain unchanged, the clamping cover 301 is movably sleeved on the corresponding heating tube 3 in a threaded connection, so that the clamping cover 301 can be further adjusted.
Example Embodiment
[0065] Example 3
[0066] On the basis that the above-mentioned other technical solutions remain unchanged, the deflectors 4 are used in pairs, and two oppositely arranged deflectors 4 constitute a convection device, and then the butanediol in each area is impacted and merged with each other. Flow to the surrounding area vigorously and evenly.
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Abstract
The invention relates to a butanediol low-temperature water removal device and a use method thereof, and belongs to the technical field of butanediol processing. The butanediol low-temperature water removal device comprises a distilling kettle and a sealing cover for sealing the distilling kettle. A heating pipe is introduced into the distilling kettle. The side wall of the distilling kettle is ofa dual-layer structure formed with an inner wall and an outer wall. The dual-layer structure is divided into a lower space and an upper space independent of each other. The lower space and the upperspace are each in a vacuum state. The outer wall of the upper space is provided with a vacuum pump insertion opening. The inner wall of the upper space is provided with a first check valve introducedinto a containing cavity of the distilling kettle. The heating pipe is embedded in the distilling kettle. The middle section of the heating pipe is located in the containing cavity of the distilling kettle. By means of the depressurized distilling mode, water removal can be conducted on inflammable butanediol, the heated oxidization and combustion probability of the butanediol are reduced, and theproduction safety is improved.
Description
Technical field [0001] The invention relates to the technical field of butanediol processing, in particular to a butanediol low-temperature water removal equipment and a method of use thereof. Background technique [0002] Butanediol is also called 1.3-butanediol. It has the characteristics of dihydric alcohol reactivity, odorless, low toxicity, and good water solubility. It is mainly used in organic synthesis and is a raw material for polyester resins and alkyd resins. Raw materials for plasticizers, raw materials for polyurethane coatings, wetting agents and softeners, intermediates for pharmaceuticals and dyes, surfactants, plasticizers, humectants, coupling agents, solvents, food additives and fragrances. [0003] Butylene glycol is soluble in water, acetone, methyl / ethyl (methyl) ketone, ethanol, dibutyl phthalate, castor oil, and almost insoluble in aliphatic hydrocarbons, benzene, toluene, carbon tetrachloride, ethanolamines , Mineral oil, linseed oil. Because of its high ...
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